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<table width="100%" summary="page for ships"><tr><td>ships</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>
Ships Damage Data
</h2>

<h3>Description</h3>

<p>Data frame giving the number of damage incidents and aggregate
months of service by ship type, year of construction, and period of operation.
</p>


<h3>Usage</h3>

<pre>
ships
</pre>


<h3>Format</h3>


<dl>
<dt><code>type</code></dt><dd>
<p>type: <code>"A"</code> to <code>"E"</code>.
</p>
</dd>
<dt><code>year</code></dt><dd>
<p>year of construction: 1960&ndash;64, 65&ndash;69, 70&ndash;74, 75&ndash;79
(coded as <code>"60"</code>, <code>"65"</code>, <code>"70"</code>, <code>"75"</code>).
</p>
</dd>
<dt><code>period</code></dt><dd>
<p>period of operation : 1960&ndash;74, 75&ndash;79.
</p>
</dd>
<dt><code>service</code></dt><dd>
<p>aggregate months of service.
</p>
</dd>
<dt><code>incidents</code></dt><dd>
<p>number of damage incidents.
</p>
</dd>
</dl>



<h3>Source</h3>

<p>P. McCullagh and J. A. Nelder, (1983),
<em>Generalized Linear Models.</em> Chapman &amp; Hall, section 6.3.2, page 137
</p>


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